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Finding RF and RM in implicit dynamic seismic analysis

Thread starter Hipp53
Start date Jul 13, 2014

Status: Not open for further replies.

Jul 13, 2014

Hipp53

Structural

I have a cantilevered pipe-like structure modeled with shell elements and it is subjected to a seismic load using an implicit dynamic step. I have applied the acceleration to the bottom of the pipe using a boundary condition. In order to produce movement, I have released the transitional BC in the direction that the load is applied. (Example: seismic load applied in x direction, U1 is released and all others remain fixed.) My question is how can I find the total reaction force and moment at the bottom of the pipe? I've tried to couple it to a fixed reference point but that doesn't allow movement of the pipe. Any thoughts would be appreciated.
Thanks